With Therm-a-Rest’s mighty MondoKing 3D mattress you’ll have an unbeatable night's sleep under the stars. Built with a StrataCore construction, it features a continuous layer of thermal foam sandwiched between alternating layers of air and foam. The result is 10cm of supportive cushioning and an outstanding warmth-to-weight ratio. Ensuring you sleep soundly, the plush stretch knit fabrics are soft next-to-skin while the vertical sidewalls maximise your sleeping area. So you can make the most of your snoozing time, the MondoKing 3D features a TwinLock Valve system to speed up inflation and deflation.
Features:
Plush 50 denier polyester stretch knit fabric is supple and breathable
StrataCore construction: continuous layer of thermal foam sandwiched between alternating ridges of air and foam
StrataCore yields an impressive warmth-to-weight ratio
10cm of stabilised loft provides outstanding sleeping comfort
Vertical sidewalls maximise usable sleeping area
TwinLock Valve system: two one-way valves, one for inflation and one for deflation, makes setting up and packing down quick and easy
Pump stuff sack
Specifications:
Size: 76 x 203 x 11cm
Pack size: 79 x 26cm
Weight: 2500g
R-Value: 7.0
R-Value Technology
R-value is a measure of thermal resistance; the higher the R-value, the more thermally resistant the material or structure is. In layman’s terms, the higher the R-value, the warmer you’ll be.
Delivery & Returns
UK Delivery
Express Delivery
Order by 1pm (GMT) Monday-Friday for same day dispatch with express delivery.
Express orders placed after 1pm (GMT) on Fridays will be dispatched on Mondays. Orders placed on Saturdays or Sundays will be dispatched by Tuesday.
This option is only available when all items in your order can be sourced from our warehouse.
This service is only available to standard UK postcodes. Express delivery is unavailable for the Channel Islands, the Isle of Man, the BFPO, and the Scottish Islands/Highlands.
Economy Delivery
If items in your basket need to be sourced from a shop, they will be dispatched in 7 working days. This delivery option is always free.
UK Delivery Times
You’ll receive items dispatched from our warehouse within 2 working days. If we have to source the item(s) from one of our shops, delivery will take up to 5 working days.
Looking for a delivery option that’s not listed? Call our customer service team to discuss on 0808 164 0600.
UK Delivery Methods
Spend over £80 to get FREE delivery to standard UK addresses (including Scottish Islands/Highlands).
Free delivery is available for all orders sent with economy delivery.
In the UK we use DPD Local and Royal Mail to deliver our parcels. If your parcel is small and of low value, we will send it via Royal Mail Tracked 48. Other items will be sent via DPD Local. Physical Gift Vouchers are sent with Royal Mail 1st Class. We will send you an email once we have packed your order. Further tracking information will be sent directly from the courier.
Delivery Prices
Parcel / Destination
UK (excluding UK Islands)
Channel Islands, Isle of Man, Northern Ireland and BFPO
Shipping may take up to 2 days to deliver to Scottish Islands/Highlands.
Please note that a signature is always required upon receipt.
If your address is in a VAT free area, e.g. Channel Islands, VAT will be removed from your order total before payment is made.
Customers are responsible for the cost of all postage charges.
Specific Delivery Date Requests
If you are ordering goods for a particular holiday departure date or as a gift for a birthday etc., please inform us in the Delivery Notes field when making your order so we can make every effort to meet this deadline.
Free Click and Collect In-store
Free Click and Collect is available for all products on the website. At checkout, select Click and Collect as your delivery option. Then, choose the most convenient store to collect your order from.
You will receive an email to confirm your order. You will get a second message when your order is ready to collect.
Items in stock at your chosen store should be available within 24 hours of ordering. If we need to take items from another store or warehouse, it will take between 2 and 5 working days before they are available to collect.
International Delivery
Delivery timeframes for non-UK delivery vary depending on location, and take between 2 – 9 days. Similarly, non UK delivery charges start at £13 for Europe and go up to £30 for Southern hemisphere regions. For more detailed information please visit our international delivery page. Please note that the prices we quote on this page are for standard deliveries, i.e. parcel weight and size restrictions apply. For non-standard deliveries, e.g. skis and snowboards, our customer service team will contact you once you’ve placed the order to discuss any additional payment required.
Returns
In light of the Covid-19 Coronavirus pandemic, we have increased our returns offer from 21 days to 30 days.
Returns must be made within 30 days of receiving goods, and we will issue a refund within 7 working days of the goods being sent back to us. When you receive your order there will be a returns form inside, so please complete this and send back with the returned goods. Return carriage must be paid by the customer for unwanted goods, and we offer a variety of ways for you to make a return e.g. taking to one of our stores free of charge, or Post Office drop off for £2.50. For full details please visit our returns page.
Free delivery on orders over £80
